3 answers

Do a web search on "Certified Personal Trainer" and you will come up with page upon page of certification options and what each of those options require. so that answers the "book" part of your question.

However, in my opinion the biggest "talent" one needs to become a CPT is a love of physical fitness, the desire to help others, and to continue learning. Without a healthy dose of those characteristics (and I'm sure others will have more to add) one's ability to stay training is likely to be very short-termed.

Legally it doesn't take a whole lot. You can legally practice in most areas without even a certification.

Ethically and professionally, you should have a bare minimum of nationally recognized certification such as one from the National Academy of Sports Medicine, American College of Sports Medicine, or the National Strength and Conditioning Association. All of these organizations can supply you with a base level of knowledge to safely begin practicing. If you are very serious about this as a career, I would highly recommend pursuing a bachelor's degree in exercise science or a similar field.

Most importantly, you should have a strong desire to help others. Liking fitness and working out is not enough. Very often you will have to deal with others that don't share your passion and you will need to find ways to relate to them and motivate them to succeed. Passion and drive for what you do are also important. You probably will not make a lot of money and will have to work off hours. A successful trainer will also possess a positive mindset and believe in others even when they may not.

This is a career that can be filled with challenges, but one that rewards those who embrace it with all of their heart and soul.

Ken is spot on with the certs: ACSM, NASM, NSCA. Having a college degree or even an advanced degree in the field is a big plus as well.

Also, being an excellent trainer means that you are willing and passionate to keep learning, studying, and doing everything you can to be as knowledgeable as possible.

Successful trainers oftentimes are great communicators and listeners. Being able to truly connect with other people, being able to be in the moment, and giving off a very positive aura are key attributes.

A successful trainer will be meticulous with record keeping, scheduling, and have either a photographic memory or a good system for remembering key personal facts about each and every client.